Merged r9433:9527 from features/gr-usrp2 into trunk. Adds usrp2 and gr-usrp2 top-level components. Trunk passes distcheck with mb-gcc installed, but currently not without them. The key issue is that when mb-gcc is not installed, the build system skips over the usrp2/firmware directory, and the firmware include files don't get put into the dist tarball. But we can't do the usual DIST_SUBDIRS method as the firmware is a subpackage.

git-svn-id: http://gnuradio.org/svn/gnuradio/trunk@9528 221aa14e-8319-0410-a670-987f0aec2ac5

57 files changed, 1546 insertions, 0 deletions

diff --git a/opencores/spi/CVS/Entries b/opencores/spi/CVS/Entries
new file mode 100644
index 000000000..62011c465
--- /dev/null
+++ b/opencores/spi/CVS/Entries
@@ -0,0 +1,4 @@
+D/bench////
+D/doc////
+D/rtl////
+D/sim////
diff --git a/opencores/spi/CVS/Repository b/opencores/spi/CVS/Repository
new file mode 100644
index 000000000..c928c4b77
--- /dev/null
+++ b/opencores/spi/CVS/Repository
@@ -0,0 +1 @@
+spi
diff --git a/opencores/spi/CVS/Root b/opencores/spi/CVS/Root
new file mode 100644
index 000000000..44b2aa23b
--- /dev/null
+++ b/opencores/spi/CVS/Root
@@ -0,0 +1 @@
+:pserver:anonymous@cvs.opencores.org:/cvsroot/anonymous
diff --git a/opencores/spi/CVS/Template b/opencores/spi/CVS/Template
new file mode 100644
index 000000000..e69de29bb
--- /dev/null
+++ b/opencores/spi/CVS/Template
diff --git a/opencores/spi/bench/CVS/Entries b/opencores/spi/bench/CVS/Entries
new file mode 100644
index 000000000..428c5622d
--- /dev/null
+++ b/opencores/spi/bench/CVS/Entries
@@ -0,0 +1 @@
+D/verilog////
diff --git a/opencores/spi/bench/CVS/Repository b/opencores/spi/bench/CVS/Repository
new file mode 100644
index 000000000..f45728d0f
--- /dev/null
+++ b/opencores/spi/bench/CVS/Repository
@@ -0,0 +1 @@
+spi/bench
diff --git a/opencores/spi/bench/CVS/Root b/opencores/spi/bench/CVS/Root
new file mode 100644
index 000000000..44b2aa23b
--- /dev/null
+++ b/opencores/spi/bench/CVS/Root
@@ -0,0 +1 @@
+:pserver:anonymous@cvs.opencores.org:/cvsroot/anonymous
diff --git a/opencores/spi/bench/CVS/Template b/opencores/spi/bench/CVS/Template
new file mode 100644
index 000000000..e69de29bb
--- /dev/null
+++ b/opencores/spi/bench/CVS/Template
diff --git a/opencores/spi/bench/verilog/CVS/Entries b/opencores/spi/bench/verilog/CVS/Entries
new file mode 100644
index 000000000..68404f871
--- /dev/null
+++ b/opencores/spi/bench/verilog/CVS/Entries
@@ -0,0 +1,4 @@
+/spi_slave_model.v/1.2/Wed Mar 26 16:00:03 2003//
+/tb_spi_top.v/1.6/Mon Mar 15 17:46:04 2004//
+/wb_master_model.v/1.1.1.1/Wed Jun 12 15:45:23 2002//
+D
diff --git a/opencores/spi/bench/verilog/CVS/Repository b/opencores/spi/bench/verilog/CVS/Repository
new file mode 100644
index 000000000..78a3c4a9f
--- /dev/null
+++ b/opencores/spi/bench/verilog/CVS/Repository
@@ -0,0 +1 @@
+spi/bench/verilog
diff --git a/opencores/spi/bench/verilog/CVS/Root b/opencores/spi/bench/verilog/CVS/Root
new file mode 100644
index 000000000..44b2aa23b
--- /dev/null
+++ b/opencores/spi/bench/verilog/CVS/Root
@@ -0,0 +1 @@
+:pserver:anonymous@cvs.opencores.org:/cvsroot/anonymous
diff --git a/opencores/spi/bench/verilog/CVS/Template b/opencores/spi/bench/verilog/CVS/Template
new file mode 100644
index 000000000..e69de29bb
--- /dev/null
+++ b/opencores/spi/bench/verilog/CVS/Template
diff --git a/opencores/spi/bench/verilog/spi_slave_model.v b/opencores/spi/bench/verilog/spi_slave_model.v
new file mode 100644
index 000000000..dfdaed929
--- /dev/null
+++ b/opencores/spi/bench/verilog/spi_slave_model.v
@@ -0,0 +1,73 @@
+//////////////////////////////////////////////////////////////////////
+////                                                              ////
+////  spi_slave_model.v                                           ////
+////                                                              ////
+////  This file is part of the SPI IP core project                ////
+////  http://www.opencores.org/projects/spi/                      ////
+////                                                              ////
+////  Author(s):                                                  ////
+////      - Simon Srot (simons@opencores.org)                     ////
+////                                                              ////
+////  All additional information is avaliable in the Readme.txt   ////
+////  file.                                                       ////
+////                                                              ////
+//////////////////////////////////////////////////////////////////////
+////                                                              ////
+//// Copyright (C) 2002 Authors                                   ////
+////                                                              ////
+//// This source file may be used and distributed without         ////
+//// restriction provided that this copyright statement is not    ////
+//// removed from the file and that any derivative work contains  ////
+//// the original copyright notice and the associated disclaimer. ////
+////                                                              ////
+//// This source file is free software; you can redistribute it   ////
+//// and/or modify it under the terms of the GNU Lesser General   ////
+//// Public License as published by the Free Software Foundation; ////
+//// either version 2.1 of the License, or (at your option) any   ////
+//// later version.                                               ////
+////                                                              ////
+//// This source is distributed in the hope that it will be       ////
+//// useful, but WITHOUT ANY WARRANTY; without even the implied   ////
+//// warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR      ////
+//// PURPOSE.  See the GNU Lesser General Public License for more ////
+//// details.                                                     ////
+////                                                              ////
+//// You should have received a copy of the GNU Lesser General    ////
+//// Public License along with this source; if not, download it   ////
+//// from http://www.opencores.org/lgpl.shtml                     ////
+////                                                              ////
+//////////////////////////////////////////////////////////////////////
+
+`include "timescale.v"
+
+module spi_slave_model (rst, ss, sclk, mosi, miso);
+
+  input         rst;            // reset
+  input         ss;             // slave select
+  input         sclk;           // serial clock
+  input         mosi;           // master out slave in
+  output        miso;           // master in slave out
+
+  reg           miso;
+
+  reg           rx_negedge;     // slave receiving on negedge
+  reg           tx_negedge;     // slave transmiting on negedge
+  reg    [31:0] data;           // data register
+
+  parameter     Tp = 1;
+
+  always @(posedge(sclk && !rx_negedge) or negedge(sclk && rx_negedge) or rst)
+  begin
+    if (rst)
+      data <= #Tp 32'b0;
+    else if (!ss)
+      data <= #Tp {data[30:0], mosi};
+  end
+
+  always @(posedge(sclk && !tx_negedge) or negedge(sclk && tx_negedge))
+  begin
+    miso <= #Tp data[31];
+  end
+
+endmodule
+      
diff --git a/opencores/spi/bench/verilog/tb_spi_top.v b/opencores/spi/bench/verilog/tb_spi_top.v
new file mode 100644
index 000000000..529c0aca1
--- /dev/null
+++ b/opencores/spi/bench/verilog/tb_spi_top.v
@@ -0,0 +1,339 @@
+//////////////////////////////////////////////////////////////////////
+////                                                              ////
+////  tb_spi_top.v                                                ////
+////                                                              ////
+////  This file is part of the SPI IP core project                ////
+////  http://www.opencores.org/projects/spi/                      ////
+////                                                              ////
+////  Author(s):                                                  ////
+////      - Simon Srot (simons@opencores.org)                     ////
+////                                                              ////
+////  Based on:                                                   ////
+////      - i2c/bench/verilog/tst_bench_top.v                     ////
+////        Copyright (C) 2001 Richard Herveille                  ////
+////                                                              ////
+////  All additional information is avaliable in the Readme.txt   ////
+////  file.                                                       ////
+////                                                              ////
+//////////////////////////////////////////////////////////////////////
+////                                                              ////
+//// Copyright (C) 2002 Authors                                   ////
+////                                                              ////
+//// This source file may be used and distributed without         ////
+//// restriction provided that this copyright statement is not    ////
+//// removed from the file and that any derivative work contains  ////
+//// the original copyright notice and the associated disclaimer. ////
+////                                                              ////
+//// This source file is free software; you can redistribute it   ////
+//// and/or modify it under the terms of the GNU Lesser General   ////
+//// Public License as published by the Free Software Foundation; ////
+//// either version 2.1 of the License, or (at your option) any   ////
+//// later version.                                               ////
+////                                                              ////
+//// This source is distributed in the hope that it will be       ////
+//// useful, but WITHOUT ANY WARRANTY; without even the implied   ////
+//// warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR      ////
+//// PURPOSE.  See the GNU Lesser General Public License for more ////
+//// details.                                                     ////
+////                                                              ////
+//// You should have received a copy of the GNU Lesser General    ////
+//// Public License along with this source; if not, download it   ////
+//// from http://www.opencores.org/lgpl.shtml                     ////
+////                                                              ////
+//////////////////////////////////////////////////////////////////////
+
+`include "timescale.v"
+
+module tb_spi_top();
+
+  reg         clk;
+  reg         rst;
+  wire [31:0] adr;
+  wire [31:0] dat_i, dat_o;
+  wire        we;
+  wire  [3:0] sel;
+  wire        stb;
+  wire        cyc;
+  wire        ack;
+  wire        err;
+  wire        int;
+
+  wire  [7:0] ss;
+  wire        sclk;
+  wire        mosi;
+  wire        miso;
+
+  reg  [31:0] q;
+  reg  [31:0] q1;
+  reg  [31:0] q2;
+  reg  [31:0] q3;
+  reg  [31:0] result;
+
+  parameter SPI_RX_0   = 5'h0;
+  parameter SPI_RX_1   = 5'h4;
+  parameter SPI_RX_2   = 5'h8;
+  parameter SPI_RX_3   = 5'hc;
+  parameter SPI_TX_0   = 5'h0;
+  parameter SPI_TX_1   = 5'h4;
+  parameter SPI_TX_2   = 5'h8;
+  parameter SPI_TX_3   = 5'hc;
+  parameter SPI_CTRL   = 5'h10;
+  parameter SPI_DIVIDE = 5'h14;
+  parameter SPI_SS     = 5'h18;
+
+  // Generate clock
+  always #5 clk = ~clk;
+
+  // Wishbone master model
+  wb_master_model #(32, 32) i_wb_master (
+    .clk(clk), .rst(rst),
+    .adr(adr), .din(dat_i), .dout(dat_o),
+    .cyc(cyc), .stb(stb), .we(we), .sel(sel), .ack(ack), .err(err), .rty(1'b0)
+  );
+
+  // SPI master core
+  spi_top i_spi_top (
+    .wb_clk_i(clk), .wb_rst_i(rst), 
+    .wb_adr_i(adr[4:0]), .wb_dat_i(dat_o), .wb_dat_o(dat_i), 
+    .wb_sel_i(sel), .wb_we_i(we), .wb_stb_i(stb), 
+    .wb_cyc_i(cyc), .wb_ack_o(ack), .wb_err_o(err), .wb_int_o(int),
+    .ss_pad_o(ss), .sclk_pad_o(sclk), .mosi_pad_o(mosi), .miso_pad_i(miso) 
+  );
+
+  // SPI slave model
+  spi_slave_model i_spi_slave (
+    .rst(rst), .ss(ss[0]), .sclk(sclk), .mosi(mosi), .miso(miso)
+  );
+
+  initial
+    begin
+      $display("\nstatus: %t Testbench started\n\n", $time);
+
+      $dumpfile("bench.vcd");
+      $dumpvars(1, tb_spi_top);
+      $dumpvars(1, tb_spi_top.i_spi_slave);
+
+      // Initial values
+      clk = 0;
+
+      i_spi_slave.rx_negedge = 1'b0;
+      i_spi_slave.tx_negedge = 1'b0;
+
+      result = 32'h0;
+
+      // Reset system
+      rst = 1'b0; // negate reset
+      #2;
+      rst = 1'b1; // assert reset
+      repeat(20) @(posedge clk);
+      rst = 1'b0; // negate reset
+
+      $display("status: %t done reset", $time);
+      
+      @(posedge clk);
+
+      // Program core
+      i_wb_master.wb_write(0, SPI_DIVIDE, 32'h00); // set devider register
+      i_wb_master.wb_write(0, SPI_TX_0, 32'h5a);   // set tx register to 0x5a
+      i_wb_master.wb_write(0, SPI_CTRL, 32'h208);   // set 8 bit transfer
+      i_wb_master.wb_write(0, SPI_SS, 32'h01);     // set ss 0
+
+      $display("status: %t programmed registers", $time);
+
+      i_wb_master.wb_cmp(0, SPI_DIVIDE, 32'h00);   // verify devider register
+      i_wb_master.wb_cmp(0, SPI_TX_0, 32'h5a);     // verify tx register
+      i_wb_master.wb_cmp(0, SPI_CTRL, 32'h208);     // verify tx register
+      i_wb_master.wb_cmp(0, SPI_SS, 32'h01);       // verify ss register
+
+      $display("status: %t verified registers", $time);
+
+      i_spi_slave.rx_negedge = 1'b1;
+      i_spi_slave.tx_negedge = 1'b0;
+      i_spi_slave.data[31:0] = 32'ha5967e5a;
+      i_wb_master.wb_write(0, SPI_CTRL, 32'h308);   // set 8 bit transfer, start transfer
+
+      $display("status: %t generate transfer:  8 bit, msb first, tx posedge, rx negedge", $time);
+
+      // Check bsy bit
+      i_wb_master.wb_read(0, SPI_CTRL, q);
+      while (q[8])
+        i_wb_master.wb_read(1, SPI_CTRL, q);
+
+      i_wb_master.wb_read(1, SPI_RX_0, q);
+      result = result + q;
+
+      if (i_spi_slave.data[7:0] == 8'h5a && q == 32'h000000a5)
+        $display("status: %t transfer completed: ok", $time);
+      else
+        $display("status: %t transfer completed: nok", $time);
+
+      i_spi_slave.rx_negedge = 1'b0;
+      i_spi_slave.tx_negedge = 1'b1;
+      i_wb_master.wb_write(0, SPI_TX_0, 32'ha5);
+      i_wb_master.wb_write(0, SPI_CTRL, 32'h408);   // set 8 bit transfer, tx negedge
+      i_wb_master.wb_write(0, SPI_CTRL, 32'h508);   // set 8 bit transfer, tx negedge, start transfer
+
+      $display("status: %t generate transfer:  8 bit, msb first, tx negedge, rx posedge", $time);
+
+      // Check bsy bit
+      i_wb_master.wb_read(0, SPI_CTRL, q);
+      while (q[8])
+        i_wb_master.wb_read(1, SPI_CTRL, q);
+
+      i_wb_master.wb_read(1, SPI_RX_0, q);
+      result = result + q;
+
+      if (i_spi_slave.data[7:0] == 8'ha5 && q == 32'h00000096)
+        $display("status: %t transfer completed: ok", $time);
+      else
+        $display("status: %t transfer completed: nok", $time);
+
+      i_spi_slave.rx_negedge = 1'b0;
+      i_spi_slave.tx_negedge = 1'b1;
+      i_wb_master.wb_write(0, SPI_TX_0, 32'h5aa5);
+      i_wb_master.wb_write(0, SPI_CTRL, 32'hc10);   // set 16 bit transfer, tx negedge, lsb
+      i_wb_master.wb_write(0, SPI_CTRL, 32'hd10);   // set 16 bit transfer, tx negedge, start transfer
+
+      $display("status: %t generate transfer: 16 bit, lsb first, tx negedge, rx posedge", $time);
+
+      // Check bsy bit
+      i_wb_master.wb_read(0, SPI_CTRL, q);
+      while (q[8])
+        i_wb_master.wb_read(1, SPI_CTRL, q);
+
+      i_wb_master.wb_read(1, SPI_RX_0, q);
+      result = result + q;
+
+      if (i_spi_slave.data[15:0] == 16'ha55a && q == 32'h00005a7e)
+        $display("status: %t transfer completed: ok", $time);
+      else
+        $display("status: %t transfer completed: nok", $time);
+
+      i_spi_slave.rx_negedge = 1'b1;
+      i_spi_slave.tx_negedge = 1'b0;
+      i_wb_master.wb_write(0, SPI_TX_0, 32'h76543210);
+      i_wb_master.wb_write(0, SPI_TX_1, 32'hfedcba98);
+      i_wb_master.wb_write(0, SPI_CTRL, 32'h1a40);   // set 64 bit transfer, rx negedge, lsb
+      i_wb_master.wb_write(0, SPI_CTRL, 32'h1b40);   // set 64 bit transfer, rx negedge, start transfer
+
+      $display("status: %t generate transfer: 64 bit, lsb first, tx posedge, rx negedge", $time);
+
+      // Check bsy bit
+      i_wb_master.wb_read(0, SPI_CTRL, q);
+      while (q[8])
+        i_wb_master.wb_read(1, SPI_CTRL, q);
+
+      i_wb_master.wb_read(1, SPI_RX_0, q);
+      result = result + q;
+      i_wb_master.wb_read(1, SPI_RX_1, q1);
+      result = result + q1;
+
+      if (i_spi_slave.data == 32'h195d3b7f && q == 32'h5aa5a55a && q1 == 32'h76543210)
+        $display("status: %t transfer completed: ok", $time);
+      else
+        $display("status: %t transfer completed: nok", $time);
+
+      i_spi_slave.rx_negedge = 1'b0;
+      i_spi_slave.tx_negedge = 1'b1;
+      i_wb_master.wb_write(0, SPI_TX_0, 32'hccddeeff);
+      i_wb_master.wb_write(0, SPI_TX_1, 32'h8899aabb);
+      i_wb_master.wb_write(0, SPI_TX_2, 32'h44556677);
+      i_wb_master.wb_write(0, SPI_TX_3, 32'h00112233);
+      i_wb_master.wb_write(0, SPI_CTRL, 32'h400);
+      i_wb_master.wb_write(0, SPI_CTRL, 32'h500);
+
+      $display("status: %t generate transfer: 128 bit, msb first, tx posedge, rx negedge", $time);
+
+      // Check bsy bit
+      i_wb_master.wb_read(0, SPI_CTRL, q);
+      while (q[8])
+        i_wb_master.wb_read(1, SPI_CTRL, q);
+
+      i_wb_master.wb_read(1, SPI_RX_0, q);
+      result = result + q;
+      i_wb_master.wb_read(1, SPI_RX_1, q1);
+      result = result + q1;
+      i_wb_master.wb_read(1, SPI_RX_2, q2);
+      result = result + q2;
+      i_wb_master.wb_read(1, SPI_RX_3, q3);
+      result = result + q3;
+
+      if (i_spi_slave.data == 32'hccddeeff && q == 32'h8899aabb && q1 == 32'h44556677 && q2 == 32'h00112233 && q3 == 32'h195d3b7f)
+        $display("status: %t transfer completed: ok", $time);
+      else
+        $display("status: %t transfer completed: nok", $time);
+
+      i_spi_slave.rx_negedge = 1'b0;
+      i_spi_slave.tx_negedge = 1'b1;
+      i_wb_master.wb_write(0, SPI_TX_0, 32'haa55a5a5);
+      i_wb_master.wb_write(0, SPI_CTRL, 32'h1420);
+      i_wb_master.wb_write(0, SPI_CTRL, 32'h1520);
+
+      $display("status: %t generate transfer: 32 bit, msb first, tx negedge, rx posedge, ie", $time);
+
+      // Check interrupt signal
+      while (!int)
+        @(posedge clk);
+
+      i_wb_master.wb_read(1, SPI_RX_0, q);
+      result = result + q;
+    
+      @(posedge clk);
+      if (!int && i_spi_slave.data == 32'haa55a5a5 && q == 32'hccddeeff)
+        $display("status: %t transfer completed: ok", $time);
+      else
+        $display("status: %t transfer completed: nok", $time);
+
+      i_spi_slave.rx_negedge = 1'b1;
+      i_spi_slave.tx_negedge = 1'b0;
+      i_wb_master.wb_write(0, SPI_TX_0, 32'h01248421);
+      i_wb_master.wb_write(0, SPI_CTRL, 32'h3220);
+      i_wb_master.wb_write(0, SPI_CTRL, 32'h3320);
+
+      $display("status: %t generate transfer: 32 bit, msb first, tx posedge, rx negedge, ie, ass", $time);
+
+      while (!int)
+        @(posedge clk);
+
+      i_wb_master.wb_read(1, SPI_RX_0, q);
+      result = result + q;
+
+      @(posedge clk);
+      if (!int && i_spi_slave.data == 32'h01248421 && q == 32'haa55a5a5)
+        $display("status: %t transfer completed: ok", $time);
+      else
+        $display("status: %t transfer completed: nok", $time);
+
+      i_spi_slave.rx_negedge = 1'b1;
+      i_spi_slave.tx_negedge = 1'b0;
+      i_wb_master.wb_write(0, SPI_TX_0, 32'h1);
+      i_wb_master.wb_write(0, SPI_CTRL, 32'h3201);
+      i_wb_master.wb_write(0, SPI_CTRL, 32'h3301);
+
+      $display("status: %t generate transfer: 1 bit, msb first, tx posedge, rx negedge, ie, ass", $time);
+
+      while (!int)
+        @(posedge clk);
+
+      i_wb_master.wb_read(1, SPI_RX_0, q);
+      result = result + q;
+
+      @(posedge clk);
+      if (!int && i_spi_slave.data == 32'h02490843 && q == 32'h0)
+        $display("status: %t transfer completed: ok", $time);
+      else
+        $display("status: %t transfer completed: nok", $time);
+
+      $display("\n\nstatus: %t Testbench done", $time);
+
+      #25000; // wait 25us
+
+      $display("report (%h)", (result ^ 32'h2e8b36ab) + 32'hdeaddead);
+      $display("exit (%h)", result ^ 32'h2e8b36ab);
+
+      $stop;
+    end
+
+endmodule
+
+
diff --git a/opencores/spi/bench/verilog/wb_master_model.v b/opencores/spi/bench/verilog/wb_master_model.v
new file mode 100644
index 000000000..3f8b7ee6a
--- /dev/null
+++ b/opencores/spi/bench/verilog/wb_master_model.v
@@ -0,0 +1,176 @@
+//////////////////////////////////////////////////////////////////////
+////                                                              ////
+////  wb_master_model.v                                           ////
+////                                                              ////
+////  This file is part of the SPI IP core project                ////
+////  http://www.opencores.org/projects/spi/                      ////
+////                                                              ////
+////  Author(s):                                                  ////
+////      - Simon Srot (simons@opencores.org)                     ////
+////                                                              ////
+////  Based on:                                                   ////
+////      - i2c/bench/verilog/wb_master_model.v                   ////
+////        Copyright (C) 2001 Richard Herveille                  ////
+////                                                              ////
+////  All additional information is avaliable in the Readme.txt   ////
+////  file.                                                       ////
+////                                                              ////
+//////////////////////////////////////////////////////////////////////
+////                                                              ////
+//// Copyright (C) 2002 Authors                                   ////
+////                                                              ////
+//// This source file may be used and distributed without         ////
+//// restriction provided that this copyright statement is not    ////
+//// removed from the file and that any derivative work contains  ////
+//// the original copyright notice and the associated disclaimer. ////
+////                                                              ////
+//// This source file is free software; you can redistribute it   ////
+//// and/or modify it under the terms of the GNU Lesser General   ////
+//// Public License as published by the Free Software Foundation; ////
+//// either version 2.1 of the License, or (at your option) any   ////
+//// later version.                                               ////
+////                                                              ////
+//// This source is distributed in the hope that it will be       ////
+//// useful, but WITHOUT ANY WARRANTY; without even the implied   ////
+//// warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR      ////
+//// PURPOSE.  See the GNU Lesser General Public License for more ////
+//// details.                                                     ////
+////                                                              ////
+//// You should have received a copy of the GNU Lesser General    ////
+//// Public License along with this source; if not, download it   ////
+//// from http://www.opencores.org/lgpl.shtml                     ////
+////                                                              ////
+//////////////////////////////////////////////////////////////////////
+
+`include "timescale.v"
+
+module wb_master_model(clk, rst, adr, din, dout, cyc, stb, we, sel, ack, err, rty);
+
+  parameter dwidth = 32;
+  parameter awidth = 32;
+  
+  input                  clk, rst;
+  output [awidth   -1:0] adr;
+  input  [dwidth   -1:0] din;
+  output [dwidth   -1:0] dout;
+  output                 cyc, stb;
+  output                 we;
+  output [dwidth/8 -1:0] sel;
+  input                  ack, err, rty;
+  
+  // Internal signals
+  reg    [awidth   -1:0] adr;
+  reg    [dwidth   -1:0] dout;
+  reg                    cyc, stb;
+  reg                    we;
+  reg    [dwidth/8 -1:0] sel;
+         
+  reg    [dwidth   -1:0] q;
+  
+  // Memory Logic
+  initial
+    begin
+      adr  = {awidth{1'bx}};
+      dout = {dwidth{1'bx}};
+      cyc  = 1'b0;
+      stb  = 1'bx;
+      we   = 1'hx;
+      sel  = {dwidth/8{1'bx}};
+      #1;
+    end
+  
+  // Wishbone write cycle
+  task wb_write;
+    input   delay;
+    integer delay;
+  
+    input [awidth -1:0] a;
+    input [dwidth -1:0] d;
+  
+    begin
+  
+      // wait initial delay
+      repeat(delay) @(posedge clk);
+  
+      // assert wishbone signal
+      #1;
+      adr  = a;
+      dout = d;
+      cyc  = 1'b1;
+      stb  = 1'b1;
+      we   = 1'b1;
+      sel  = {dwidth/8{1'b1}};
+      @(posedge clk);
+  
+      // wait for acknowledge from slave
+      while(~ack) @(posedge clk);
+  
+      // negate wishbone signals
+      #1;
+      cyc  = 1'b0;
+      stb  = 1'bx;
+      adr  = {awidth{1'bx}};
+      dout = {dwidth{1'bx}};
+      we   = 1'hx;
+      sel  = {dwidth/8{1'bx}};
+  
+    end
+  endtask
+  
+  // Wishbone read cycle
+  task wb_read;
+    input   delay;
+    integer delay;
+  
+    input  [awidth -1:0]  a;
+    output  [dwidth -1:0] d;
+  
+    begin
+  
+      // wait initial delay
+      repeat(delay) @(posedge clk);
+  
+      // assert wishbone signals
+      #1;
+      adr  = a;
+      dout = {dwidth{1'bx}};
+      cyc  = 1'b1;
+      stb  = 1'b1;
+      we   = 1'b0;
+      sel  = {dwidth/8{1'b1}};
+      @(posedge clk);
+  
+      // wait for acknowledge from slave
+      while(~ack) @(posedge clk);
+  
+      // negate wishbone signals
+      #1;
+      cyc  = 1'b0;
+      stb  = 1'bx;
+      adr  = {awidth{1'bx}};
+      dout = {dwidth{1'bx}};
+      we   = 1'hx;
+      sel  = {dwidth/8{1'bx}};
+      d    = din;
+  
+    end
+  endtask
+  
+  // Wishbone compare cycle (read data from location and compare with expected data)
+  task wb_cmp;
+    input   delay;
+    integer delay;
+  
+    input [awidth -1:0] a;
+    input [dwidth -1:0] d_exp;
+  
+    begin
+      wb_read (delay, a, q);
+
+    if (d_exp !== q)
+      $display("Data compare error. Received %h, expected %h at time %t", q, d_exp, $time);
+    end
+  endtask
+  
+endmodule
+ 
diff --git a/opencores/spi/doc/CVS/Entries b/opencores/spi/doc/CVS/Entries
new file mode 100644
index 000000000..ff33fa590
--- /dev/null
+++ b/opencores/spi/doc/CVS/Entries
@@ -0,0 +1,2 @@
+/spi.pdf/1.5/Mon Mar 15 17:46:05 2004/-kb/
+D/src////
diff --git a/opencores/spi/doc/CVS/Repository b/opencores/spi/doc/CVS/Repository
new file mode 100644
index 000000000..772adcef5
--- /dev/null
+++ b/opencores/spi/doc/CVS/Repository
@@ -0,0 +1 @@
+spi/doc
diff --git a/opencores/spi/doc/CVS/Root b/opencores/spi/doc/CVS/Root
new file mode 100644
index 000000000..44b2aa23b
--- /dev/null
+++ b/opencores/spi/doc/CVS/Root
@@ -0,0 +1 @@
+:pserver:anonymous@cvs.opencores.org:/cvsroot/anonymous
diff --git a/opencores/spi/doc/CVS/Template b/opencores/spi/doc/CVS/Template
new file mode 100644
index 000000000..e69de29bb
--- /dev/null
+++ b/opencores/spi/doc/CVS/Template
diff --git a/opencores/spi/doc/spi.pdf b/opencores/spi/doc/spi.pdf
new file mode 100644
index 000000000..d88ee2807
--- /dev/null
+++ b/opencores/spi/doc/spi.pdf
diff --git a/opencores/spi/doc/src/CVS/Entries b/opencores/spi/doc/src/CVS/Entries
new file mode 100644
index 000000000..adcbf083d
--- /dev/null
+++ b/opencores/spi/doc/src/CVS/Entries
@@ -0,0 +1,2 @@
+/spi.doc/1.7/Mon Mar 15 17:46:06 2004/-kb/
+D
diff --git a/opencores/spi/doc/src/CVS/Repository b/opencores/spi/doc/src/CVS/Repository
new file mode 100644
index 000000000..09b1f4a98
--- /dev/null
+++ b/opencores/spi/doc/src/CVS/Repository
@@ -0,0 +1 @@
+spi/doc/src
diff --git a/opencores/spi/doc/src/CVS/Root b/opencores/spi/doc/src/CVS/Root
new file mode 100644
index 000000000..44b2aa23b
--- /dev/null
+++ b/opencores/spi/doc/src/CVS/Root
@@ -0,0 +1 @@
+:pserver:anonymous@cvs.opencores.org:/cvsroot/anonymous
diff --git a/opencores/spi/doc/src/CVS/Template b/opencores/spi/doc/src/CVS/Template
new file mode 100644
index 000000000..e69de29bb
--- /dev/null
+++ b/opencores/spi/doc/src/CVS/Template
diff --git a/opencores/spi/doc/src/spi.doc b/opencores/spi/doc/src/spi.doc
new file mode 100755
index 000000000..b04700177
--- /dev/null
+++ b/opencores/spi/doc/src/spi.doc
diff --git a/opencores/spi/rtl/CVS/Entries b/opencores/spi/rtl/CVS/Entries
new file mode 100644
index 000000000..428c5622d
--- /dev/null
+++ b/opencores/spi/rtl/CVS/Entries
@@ -0,0 +1 @@
+D/verilog////
diff --git a/opencores/spi/rtl/CVS/Repository b/opencores/spi/rtl/CVS/Repository
new file mode 100644
index 000000000..5fd79b19b
--- /dev/null
+++ b/opencores/spi/rtl/CVS/Repository
@@ -0,0 +1 @@
+spi/rtl
diff --git a/opencores/spi/rtl/CVS/Root b/opencores/spi/rtl/CVS/Root
new file mode 100644
index 000000000..44b2aa23b
--- /dev/null
+++ b/opencores/spi/rtl/CVS/Root
@@ -0,0 +1 @@
+:pserver:anonymous@cvs.opencores.org:/cvsroot/anonymous
diff --git a/opencores/spi/rtl/CVS/Template b/opencores/spi/rtl/CVS/Template
new file mode 100644
index 000000000..e69de29bb
--- /dev/null
+++ b/opencores/spi/rtl/CVS/Template
diff --git a/opencores/spi/rtl/verilog/CVS/Entries b/opencores/spi/rtl/verilog/CVS/Entries
new file mode 100644
index 000000000..d125a1657
--- /dev/null
+++ b/opencores/spi/rtl/verilog/CVS/Entries
@@ -0,0 +1,6 @@
+/spi_clgen.v/1.3/Thu Jul  3 17:32:15 2003//
+/spi_defines.v/1.8/Mon Mar 15 17:46:08 2004//
+/spi_shift.v/1.7/Tue Jul  8 15:36:37 2003//
+/spi_top.v/1.8/Tue Jul  8 15:36:37 2003//
+/timescale.v/1.1.1.1/Wed Jun 12 15:45:23 2002//
+D
diff --git a/opencores/spi/rtl/verilog/CVS/Repository b/opencores/spi/rtl/verilog/CVS/Repository
new file mode 100644
index 000000000..361b93bf8
--- /dev/null
+++ b/opencores/spi/rtl/verilog/CVS/Repository
@@ -0,0 +1 @@
+spi/rtl/verilog
diff --git a/opencores/spi/rtl/verilog/CVS/Root b/opencores/spi/rtl/verilog/CVS/Root
new file mode 100644
index 000000000..44b2aa23b
--- /dev/null
+++ b/opencores/spi/rtl/verilog/CVS/Root
@@ -0,0 +1 @@
+:pserver:anonymous@cvs.opencores.org:/cvsroot/anonymous
diff --git a/opencores/spi/rtl/verilog/CVS/Template b/opencores/spi/rtl/verilog/CVS/Template
new file mode 100644
index 000000000..e69de29bb
--- /dev/null
+++ b/opencores/spi/rtl/verilog/CVS/Template
diff --git a/opencores/spi/rtl/verilog/spi_clgen.v b/opencores/spi/rtl/verilog/spi_clgen.v
new file mode 100644
index 000000000..7bc4f6e5e
--- /dev/null
+++ b/opencores/spi/rtl/verilog/spi_clgen.v
@@ -0,0 +1,108 @@
+//////////////////////////////////////////////////////////////////////
+////                                                              ////
+////  spi_clgen.v                                                 ////
+////                                                              ////
+////  This file is part of the SPI IP core project                ////
+////  http://www.opencores.org/projects/spi/                      ////
+////                                                              ////
+////  Author(s):                                                  ////
+////      - Simon Srot (simons@opencores.org)                     ////
+////                                                              ////
+////  All additional information is avaliable in the Readme.txt   ////
+////  file.                                                       ////
+////                                                              ////
+//////////////////////////////////////////////////////////////////////
+////                                                              ////
+//// Copyright (C) 2002 Authors                                   ////
+////                                                              ////
+//// This source file may be used and distributed without         ////
+//// restriction provided that this copyright statement is not    ////
+//// removed from the file and that any derivative work contains  ////
+//// the original copyright notice and the associated disclaimer. ////
+////                                                              ////
+//// This source file is free software; you can redistribute it   ////
+//// and/or modify it under the terms of the GNU Lesser General   ////
+//// Public License as published by the Free Software Foundation; ////
+//// either version 2.1 of the License, or (at your option) any   ////
+//// later version.                                               ////
+////                                                              ////
+//// This source is distributed in the hope that it will be       ////
+//// useful, but WITHOUT ANY WARRANTY; without even the implied   ////
+//// warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR      ////
+//// PURPOSE.  See the GNU Lesser General Public License for more ////
+//// details.                                                     ////
+////                                                              ////
+//// You should have received a copy of the GNU Lesser General    ////
+//// Public License along with this source; if not, download it   ////
+//// from http://www.opencores.org/lgpl.shtml                     ////
+////                                                              ////
+//////////////////////////////////////////////////////////////////////
+
+`include "spi_defines.v"
+`include "timescale.v"
+
+module spi_clgen (clk_in, rst, go, enable, last_clk, divider, clk_out, pos_edge, neg_edge); 
+
+  parameter Tp = 1;
+  
+  input                            clk_in;   // input clock (system clock)
+  input                            rst;      // reset
+  input                            enable;   // clock enable
+  input                            go;       // start transfer
+  input                            last_clk; // last clock
+  input     [`SPI_DIVIDER_LEN-1:0] divider;  // clock divider (output clock is divided by this value)
+  output                           clk_out;  // output clock
+  output                           pos_edge; // pulse marking positive edge of clk_out
+  output                           neg_edge; // pulse marking negative edge of clk_out
+                            
+  reg                              clk_out;
+  reg                              pos_edge;
+  reg                              neg_edge;
+                            
+  reg       [`SPI_DIVIDER_LEN-1:0] cnt;      // clock counter 
+  wire                             cnt_zero; // conter is equal to zero
+  wire                             cnt_one;  // conter is equal to one
+  
+  
+  assign cnt_zero = cnt == {`SPI_DIVIDER_LEN{1'b0}};
+  assign cnt_one  = cnt == {{`SPI_DIVIDER_LEN-1{1'b0}}, 1'b1};
+  
+  // Counter counts half period
+  always @(posedge clk_in or posedge rst)
+  begin
+    if(rst)
+      cnt <= #Tp {`SPI_DIVIDER_LEN{1'b1}};
+    else
+      begin
+        if(!enable || cnt_zero)
+          cnt <= #Tp divider;
+        else
+          cnt <= #Tp cnt - {{`SPI_DIVIDER_LEN-1{1'b0}}, 1'b1};
+      end
+  end
+  
+  // clk_out is asserted every other half period
+  always @(posedge clk_in or posedge rst)
+  begin
+    if(rst)
+      clk_out <= #Tp 1'b0;
+    else
+      clk_out <= #Tp (enable && cnt_zero && (!last_clk || clk_out)) ? ~clk_out : clk_out;
+  end
+   
+  // Pos and neg edge signals
+  always @(posedge clk_in or posedge rst)
+  begin
+    if(rst)
+      begin
+        pos_edge  <= #Tp 1'b0;
+        neg_edge  <= #Tp 1'b0;
+      end
+    else
+      begin
+        pos_edge  <= #Tp (enable && !clk_out && cnt_one) || (!(|divider) && clk_out) || (!(|divider) && go && !enable);
+        neg_edge  <= #Tp (enable && clk_out && cnt_one) || (!(|divider) && !clk_out && enable);
+      end
+  end
+endmodule
+ 
diff --git a/opencores/spi/rtl/verilog/spi_defines.v b/opencores/spi/rtl/verilog/spi_defines.v
new file mode 100644
index 000000000..a6925918e
--- /dev/null
+++ b/opencores/spi/rtl/verilog/spi_defines.v
@@ -0,0 +1,159 @@
+//////////////////////////////////////////////////////////////////////
+////                                                              ////
+////  spi_define.v                                                ////
+////                                                              ////
+////  This file is part of the SPI IP core project                ////
+////  http://www.opencores.org/projects/spi/                      ////
+////                                                              ////
+////  Author(s):                                                  ////
+////      - Simon Srot (simons@opencores.org)                     ////
+////                                                              ////
+////  All additional information is avaliable in the Readme.txt   ////
+////  file.                                                       ////
+////                                                              ////
+//////////////////////////////////////////////////////////////////////
+////                                                              ////
+//// Copyright (C) 2002 Authors                                   ////
+////                                                              ////
+//// This source file may be used and distributed without         ////
+//// restriction provided that this copyright statement is not    ////
+//// removed from the file and that any derivative work contains  ////
+//// the original copyright notice and the associated disclaimer. ////
+////                                                              ////
+//// This source file is free software; you can redistribute it   ////
+//// and/or modify it under the terms of the GNU Lesser General   ////
+//// Public License as published by the Free Software Foundation; ////
+//// either version 2.1 of the License, or (at your option) any   ////
+//// later version.                                               ////
+////                                                              ////
+//// This source is distributed in the hope that it will be       ////
+//// useful, but WITHOUT ANY WARRANTY; without even the implied   ////
+//// warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR      ////
+//// PURPOSE.  See the GNU Lesser General Public License for more ////
+//// details.                                                     ////
+////                                                              ////
+//// You should have received a copy of the GNU Lesser General    ////
+//// Public License along with this source; if not, download it   ////
+//// from http://www.opencores.org/lgpl.shtml                     ////
+////                                                              ////
+//////////////////////////////////////////////////////////////////////
+
+//
+// Number of bits used for devider register. If used in system with
+// low frequency of system clock this can be reduced.
+// Use SPI_DIVIDER_LEN for fine tuning theexact number.
+//
+//`define SPI_DIVIDER_LEN_8
+`define SPI_DIVIDER_LEN_16
+//`define SPI_DIVIDER_LEN_24
+//`define SPI_DIVIDER_LEN_32
+
+`ifdef SPI_DIVIDER_LEN_8
+  `define SPI_DIVIDER_LEN       8    // Can be set from 1 to 8
+`endif                                                          
+`ifdef SPI_DIVIDER_LEN_16                                       
+  `define SPI_DIVIDER_LEN       16   // Can be set from 9 to 16
+`endif                                                          
+`ifdef SPI_DIVIDER_LEN_24                                       
+  `define SPI_DIVIDER_LEN       24   // Can be set from 17 to 24
+`endif                                                          
+`ifdef SPI_DIVIDER_LEN_32                                       
+  `define SPI_DIVIDER_LEN       32   // Can be set from 25 to 32 
+`endif
+
+//
+// Maximum nuber of bits that can be send/received at once. 
+// Use SPI_MAX_CHAR for fine tuning the exact number, when using
+// SPI_MAX_CHAR_32, SPI_MAX_CHAR_24, SPI_MAX_CHAR_16, SPI_MAX_CHAR_8.
+//
+`define SPI_MAX_CHAR_128
+//`define SPI_MAX_CHAR_64
+//`define SPI_MAX_CHAR_32
+//`define SPI_MAX_CHAR_24
+//`define SPI_MAX_CHAR_16
+//`define SPI_MAX_CHAR_8
+
+`ifdef SPI_MAX_CHAR_128
+  `define SPI_MAX_CHAR          128  // Can only be set to 128 
+  `define SPI_CHAR_LEN_BITS     7
+`endif
+`ifdef SPI_MAX_CHAR_64
+  `define SPI_MAX_CHAR          64   // Can only be set to 64 
+  `define SPI_CHAR_LEN_BITS     6
+`endif
+`ifdef SPI_MAX_CHAR_32
+  `define SPI_MAX_CHAR          32   // Can be set from 25 to 32 
+  `define SPI_CHAR_LEN_BITS     5
+`endif
+`ifdef SPI_MAX_CHAR_24
+  `define SPI_MAX_CHAR          24   // Can be set from 17 to 24 
+  `define SPI_CHAR_LEN_BITS     5
+`endif
+`ifdef SPI_MAX_CHAR_16
+  `define SPI_MAX_CHAR          16   // Can be set from 9 to 16 
+  `define SPI_CHAR_LEN_BITS     4
+`endif
+`ifdef SPI_MAX_CHAR_8
+  `define SPI_MAX_CHAR          8    // Can be set from 1 to 8 
+  `define SPI_CHAR_LEN_BITS     3
+`endif
+
+//
+// Number of device select signals. Use SPI_SS_NB for fine tuning the 
+// exact number.
+//
+`define SPI_SS_NB_8
+//`define SPI_SS_NB_16
+//`define SPI_SS_NB_24
+//`define SPI_SS_NB_32
+
+`ifdef SPI_SS_NB_8
+  `define SPI_SS_NB             8    // Can be set from 1 to 8
+`endif
+`ifdef SPI_SS_NB_16
+  `define SPI_SS_NB             16   // Can be set from 9 to 16
+`endif
+`ifdef SPI_SS_NB_24
+  `define SPI_SS_NB             24   // Can be set from 17 to 24
+`endif
+`ifdef SPI_SS_NB_32
+  `define SPI_SS_NB             32   // Can be set from 25 to 32
+`endif
+
+//
+// Bits of WISHBONE address used for partial decoding of SPI registers.
+//
+`define SPI_OFS_BITS	          4:2
+
+//
+// Register offset
+//
+`define SPI_RX_0                0
+`define SPI_RX_1                1
+`define SPI_RX_2                2
+`define SPI_RX_3                3
+`define SPI_TX_0                0
+`define SPI_TX_1                1
+`define SPI_TX_2                2
+`define SPI_TX_3                3
+`define SPI_CTRL                4
+`define SPI_DEVIDE              5
+`define SPI_SS                  6
+
+//
+// Number of bits in ctrl register
+//
+`define SPI_CTRL_BIT_NB         14
+
+//
+// Control register bit position
+//
+`define SPI_CTRL_ASS            13
+`define SPI_CTRL_IE             12
+`define SPI_CTRL_LSB            11
+`define SPI_CTRL_TX_NEGEDGE     10
+`define SPI_CTRL_RX_NEGEDGE     9
+`define SPI_CTRL_GO             8
+`define SPI_CTRL_RES_1          7
+`define SPI_CTRL_CHAR_LEN       6:0
+
diff --git a/opencores/spi/rtl/verilog/spi_shift.v b/opencores/spi/rtl/verilog/spi_shift.v
new file mode 100644
index 000000000..b17ac8b1f
--- /dev/null
+++ b/opencores/spi/rtl/verilog/spi_shift.v
@@ -0,0 +1,238 @@
+//////////////////////////////////////////////////////////////////////
+////                                                              ////
+////  spi_shift.v                                                 ////
+////                                                              ////
+////  This file is part of the SPI IP core project                ////
+////  http://www.opencores.org/projects/spi/                      ////
+////                                                              ////
+////  Author(s):                                                  ////
+////      - Simon Srot (simons@opencores.org)                     ////
+////                                                              ////
+////  All additional information is avaliable in the Readme.txt   ////
+////  file.                                                       ////
+////                                                              ////
+//////////////////////////////////////////////////////////////////////
+////                                                              ////
+//// Copyright (C) 2002 Authors                                   ////
+////                                                              ////
+//// This source file may be used and distributed without         ////
+//// restriction provided that this copyright statement is not    ////
+//// removed from the file and that any derivative work contains  ////
+//// the original copyright notice and the associated disclaimer. ////
+////                                                              ////
+//// This source file is free software; you can redistribute it   ////
+//// and/or modify it under the terms of the GNU Lesser General   ////
+//// Public License as published by the Free Software Foundation; ////
+//// either version 2.1 of the License, or (at your option) any   ////
+//// later version.                                               ////
+////                                                              ////
+//// This source is distributed in the hope that it will be       ////
+//// useful, but WITHOUT ANY WARRANTY; without even the implied   ////
+//// warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR      ////
+//// PURPOSE.  See the GNU Lesser General Public License for more ////
+//// details.                                                     ////
+////                                                              ////
+//// You should have received a copy of the GNU Lesser General    ////
+//// Public License along with this source; if not, download it   ////
+//// from http://www.opencores.org/lgpl.shtml                     ////
+////                                                              ////
+//////////////////////////////////////////////////////////////////////
+
+`include "spi_defines.v"
+`include "timescale.v"
+
+module spi_shift (clk, rst, latch, byte_sel, len, lsb, go,
+                  pos_edge, neg_edge, rx_negedge, tx_negedge,
+                  tip, last, 
+                  p_in, p_out, s_clk, s_in, s_out);
+
+  parameter Tp = 1;
+  
+  input                          clk;          // system clock
+  input                          rst;          // reset
+  input                    [3:0] latch;        // latch signal for storing the data in shift register
+  input                    [3:0] byte_sel;     // byte select signals for storing the data in shift register
+  input [`SPI_CHAR_LEN_BITS-1:0] len;          // data len in bits (minus one)
+  input                          lsb;          // lbs first on the line
+  input                          go;           // start stansfer
+  input                          pos_edge;     // recognize posedge of sclk
+  input                          neg_edge;     // recognize negedge of sclk
+  input                          rx_negedge;   // s_in is sampled on negative edge 
+  input                          tx_negedge;   // s_out is driven on negative edge
+  output                         tip;          // transfer in progress
+  output                         last;         // last bit
+  input                   [31:0] p_in;         // parallel in
+  output     [`SPI_MAX_CHAR-1:0] p_out;        // parallel out
+  input                          s_clk;        // serial clock
+  input                          s_in;         // serial in
+  output                         s_out;        // serial out
+                                               
+  reg                            s_out;        
+  reg                            tip;
+                              
+  reg     [`SPI_CHAR_LEN_BITS:0] cnt;          // data bit count
+  reg        [`SPI_MAX_CHAR-1:0] data;         // shift register
+  wire    [`SPI_CHAR_LEN_BITS:0] tx_bit_pos;   // next bit position
+  wire    [`SPI_CHAR_LEN_BITS:0] rx_bit_pos;   // next bit position
+  wire                           rx_clk;       // rx clock enable
+  wire                           tx_clk;       // tx clock enable
+  
+  assign p_out = data;
+  
+  assign tx_bit_pos = lsb ? {!(|len), len} - cnt : cnt - {{`SPI_CHAR_LEN_BITS{1'b0}},1'b1};
+  assign rx_bit_pos = lsb ? {!(|len), len} - (rx_negedge ? cnt + {{`SPI_CHAR_LEN_BITS{1'b0}},1'b1} : cnt) : 
+                            (rx_negedge ? cnt : cnt - {{`SPI_CHAR_LEN_BITS{1'b0}},1'b1});
+  
+  assign last = !(|cnt);
+  
+  assign rx_clk = (rx_negedge ? neg_edge : pos_edge) && (!last || s_clk);
+  assign tx_clk = (tx_negedge ? neg_edge : pos_edge) && !last;
+  
+  // Character bit counter
+  always @(posedge clk or posedge rst)
+  begin
+    if(rst)
+      cnt <= #Tp {`SPI_CHAR_LEN_BITS+1{1'b0}};
+    else
+      begin
+        if(tip)
+          cnt <= #Tp pos_edge ? (cnt - {{`SPI_CHAR_LEN_BITS{1'b0}}, 1'b1}) : cnt;
+        else
+          cnt <= #Tp !(|len) ? {1'b1, {`SPI_CHAR_LEN_BITS{1'b0}}} : {1'b0, len};
+      end
+  end
+  
+  // Transfer in progress
+  always @(posedge clk or posedge rst)
+  begin
+    if(rst)
+      tip <= #Tp 1'b0;
+  else if(go && ~tip)
+    tip <= #Tp 1'b1;
+  else if(tip && last && pos_edge)
+    tip <= #Tp 1'b0;
+  end
+  
+  // Sending bits to the line
+  always @(posedge clk or posedge rst)
+  begin
+    if (rst)
+      s_out   <= #Tp 1'b0;
+    else
+      s_out <= #Tp (tx_clk || !tip) ? data[tx_bit_pos[`SPI_CHAR_LEN_BITS-1:0]] : s_out;
+  end
+  
+  // Receiving bits from the line
+  always @(posedge clk or posedge rst)
+  begin
+    if (rst)
+      data   <= #Tp {`SPI_MAX_CHAR{1'b0}};
+`ifdef SPI_MAX_CHAR_128
+    else if (latch[0] && !tip)
+      begin
+        if (byte_sel[3])
+          data[31:24] <= #Tp p_in[31:24];
+        if (byte_sel[2])
+          data[23:16] <= #Tp p_in[23:16];
+        if (byte_sel[1])
+          data[15:8] <= #Tp p_in[15:8];
+        if (byte_sel[0])
+          data[7:0] <= #Tp p_in[7:0];
+      end
+    else if (latch[1] && !tip)
+      begin
+        if (byte_sel[3])
+          data[63:56] <= #Tp p_in[31:24];
+        if (byte_sel[2])
+          data[55:48] <= #Tp p_in[23:16];
+        if (byte_sel[1])
+          data[47:40] <= #Tp p_in[15:8];
+        if (byte_sel[0])
+          data[39:32] <= #Tp p_in[7:0];
+      end
+    else if (latch[2] && !tip)
+      begin
+        if (byte_sel[3])
+          data[95:88] <= #Tp p_in[31:24];
+        if (byte_sel[2])
+          data[87:80] <= #Tp p_in[23:16];
+        if (byte_sel[1])
+          data[79:72] <= #Tp p_in[15:8];
+        if (byte_sel[0])
+          data[71:64] <= #Tp p_in[7:0];
+      end
+    else if (latch[3] && !tip)
+      begin
+        if (byte_sel[3])
+          data[127:120] <= #Tp p_in[31:24];
+        if (byte_sel[2])
+          data[119:112] <= #Tp p_in[23:16];
+        if (byte_sel[1])
+          data[111:104] <= #Tp p_in[15:8];
+        if (byte_sel[0])
+          data[103:96] <= #Tp p_in[7:0];
+      end
+`else
+`ifdef SPI_MAX_CHAR_64
+    else if (latch[0] && !tip)
+      begin
+        if (byte_sel[3])
+          data[31:24] <= #Tp p_in[31:24];
+        if (byte_sel[2])
+          data[23:16] <= #Tp p_in[23:16];
+        if (byte_sel[1])
+          data[15:8] <= #Tp p_in[15:8];
+        if (byte_sel[0])
+          data[7:0] <= #Tp p_in[7:0];
+      end
+    else if (latch[1] && !tip)
+      begin
+        if (byte_sel[3])
+          data[63:56] <= #Tp p_in[31:24];
+        if (byte_sel[2])
+          data[55:48] <= #Tp p_in[23:16];
+        if (byte_sel[1])
+          data[47:40] <= #Tp p_in[15:8];
+        if (byte_sel[0])
+          data[39:32] <= #Tp p_in[7:0];
+      end
+`else
+    else if (latch[0] && !tip)
+      begin
+      `ifdef SPI_MAX_CHAR_8
+        if (byte_sel[0])
+          data[`SPI_MAX_CHAR-1:0] <= #Tp p_in[`SPI_MAX_CHAR-1:0];
+      `endif
+      `ifdef SPI_MAX_CHAR_16
+        if (byte_sel[0])
+          data[7:0] <= #Tp p_in[7:0];
+        if (byte_sel[1])
+          data[`SPI_MAX_CHAR-1:8] <= #Tp p_in[`SPI_MAX_CHAR-1:8];
+      `endif
+      `ifdef SPI_MAX_CHAR_24
+        if (byte_sel[0])
+          data[7:0] <= #Tp p_in[7:0];
+        if (byte_sel[1])
+          data[15:8] <= #Tp p_in[15:8];
+        if (byte_sel[2])
+          data[`SPI_MAX_CHAR-1:16] <= #Tp p_in[`SPI_MAX_CHAR-1:16];
+      `endif
+      `ifdef SPI_MAX_CHAR_32
+        if (byte_sel[0])
+          data[7:0] <= #Tp p_in[7:0];
+        if (byte_sel[1])
+          data[15:8] <= #Tp p_in[15:8];
+        if (byte_sel[2])
+          data[23:16] <= #Tp p_in[23:16];
+        if (byte_sel[3])
+          data[`SPI_MAX_CHAR-1:24] <= #Tp p_in[`SPI_MAX_CHAR-1:24];
+      `endif
+      end
+`endif
+`endif
+    else
+      data[rx_bit_pos[`SPI_CHAR_LEN_BITS-1:0]] <= #Tp rx_clk ? s_in : data[rx_bit_pos[`SPI_CHAR_LEN_BITS-1:0]];
+  end
+  
+endmodule
+
diff --git a/opencores/spi/rtl/verilog/spi_top.v b/opencores/spi/rtl/verilog/spi_top.v
new file mode 100644
index 000000000..09b2e50e1
--- /dev/null
+++ b/opencores/spi/rtl/verilog/spi_top.v
@@ -0,0 +1,287 @@
+//////////////////////////////////////////////////////////////////////
+////                                                              ////
+////  spi_top.v                                                   ////
+////                                                              ////
+////  This file is part of the SPI IP core project                ////
+////  http://www.opencores.org/projects/spi/                      ////
+////                                                              ////
+////  Author(s):                                                  ////
+////      - Simon Srot (simons@opencores.org)                     ////
+////                                                              ////
+////  All additional information is avaliable in the Readme.txt   ////
+////  file.                                                       ////
+////                                                              ////
+//////////////////////////////////////////////////////////////////////
+////                                                              ////
+//// Copyright (C) 2002 Authors                                   ////
+////                                                              ////
+//// This source file may be used and distributed without         ////
+//// restriction provided that this copyright statement is not    ////
+//// removed from the file and that any derivative work contains  ////
+//// the original copyright notice and the associated disclaimer. ////
+////                                                              ////
+//// This source file is free software; you can redistribute it   ////
+//// and/or modify it under the terms of the GNU Lesser General   ////
+//// Public License as published by the Free Software Foundation; ////
+//// either version 2.1 of the License, or (at your option) any   ////
+//// later version.                                               ////
+////                                                              ////
+//// This source is distributed in the hope that it will be       ////
+//// useful, but WITHOUT ANY WARRANTY; without even the implied   ////
+//// warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR      ////
+//// PURPOSE.  See the GNU Lesser General Public License for more ////
+//// details.                                                     ////
+////                                                              ////
+//// You should have received a copy of the GNU Lesser General    ////
+//// Public License along with this source; if not, download it   ////
+//// from http://www.opencores.org/lgpl.shtml                     ////
+////                                                              ////
+//////////////////////////////////////////////////////////////////////
+
+
+`include "spi_defines.v"
+`include "timescale.v"
+
+module spi_top
+(
+  // Wishbone signals
+  wb_clk_i, wb_rst_i, wb_adr_i, wb_dat_i, wb_dat_o, wb_sel_i,
+  wb_we_i, wb_stb_i, wb_cyc_i, wb_ack_o, wb_err_o, wb_int_o,
+
+  // SPI signals
+  ss_pad_o, sclk_pad_o, mosi_pad_o, miso_pad_i
+);
+
+  parameter Tp = 1;
+
+  // Wishbone signals
+  input                            wb_clk_i;         // master clock input
+  input                            wb_rst_i;         // synchronous active high reset
+  input                      [4:0] wb_adr_i;         // lower address bits
+  input                   [32-1:0] wb_dat_i;         // databus input
+  output                  [32-1:0] wb_dat_o;         // databus output
+  input                      [3:0] wb_sel_i;         // byte select inputs
+  input                            wb_we_i;          // write enable input
+  input                            wb_stb_i;         // stobe/core select signal
+  input                            wb_cyc_i;         // valid bus cycle input
+  output                           wb_ack_o;         // bus cycle acknowledge output
+  output                           wb_err_o;         // termination w/ error
+  output                           wb_int_o;         // interrupt request signal output
+                                                     
+  // SPI signals                                     
+  output          [`SPI_SS_NB-1:0] ss_pad_o;         // slave select
+  output                           sclk_pad_o;       // serial clock
+  output                           mosi_pad_o;       // master out slave in
+  input                            miso_pad_i;       // master in slave out
+                                                     
+  reg                     [32-1:0] wb_dat_o;
+  reg                              wb_ack_o;
+  reg                              wb_int_o;
+                                               
+  // Internal signals
+  reg       [`SPI_DIVIDER_LEN-1:0] divider;          // Divider register
+  reg       [`SPI_CTRL_BIT_NB-1:0] ctrl;             // Control and status register
+  reg             [`SPI_SS_NB-1:0] ss;               // Slave select register
+  reg                     [32-1:0] wb_dat;           // wb data out
+  wire         [`SPI_MAX_CHAR-1:0] rx;               // Rx register
+  wire                             rx_negedge;       // miso is sampled on negative edge
+  wire                             tx_negedge;       // mosi is driven on negative edge
+  wire    [`SPI_CHAR_LEN_BITS-1:0] char_len;         // char len
+  wire                             go;               // go
+  wire                             lsb;              // lsb first on line
+  wire                             ie;               // interrupt enable
+  wire                             ass;              // automatic slave select
+  wire                             spi_divider_sel;  // divider register select
+  wire                             spi_ctrl_sel;     // ctrl register select
+  wire                       [3:0] spi_tx_sel;       // tx_l register select
+  wire                             spi_ss_sel;       // ss register select
+  wire                             tip;              // transfer in progress
+  wire                             pos_edge;         // recognize posedge of sclk
+  wire                             neg_edge;         // recognize negedge of sclk
+  wire                             last_bit;         // marks last character bit
+  
+  // Address decoder
+  assign spi_divider_sel = wb_cyc_i & wb_stb_i & (wb_adr_i[`SPI_OFS_BITS] == `SPI_DEVIDE);
+  assign spi_ctrl_sel    = wb_cyc_i & wb_stb_i & (wb_adr_i[`SPI_OFS_BITS] == `SPI_CTRL);
+  assign spi_tx_sel[0]   = wb_cyc_i & wb_stb_i & (wb_adr_i[`SPI_OFS_BITS] == `SPI_TX_0);
+  assign spi_tx_sel[1]   = wb_cyc_i & wb_stb_i & (wb_adr_i[`SPI_OFS_BITS] == `SPI_TX_1);
+  assign spi_tx_sel[2]   = wb_cyc_i & wb_stb_i & (wb_adr_i[`SPI_OFS_BITS] == `SPI_TX_2);
+  assign spi_tx_sel[3]   = wb_cyc_i & wb_stb_i & (wb_adr_i[`SPI_OFS_BITS] == `SPI_TX_3);
+  assign spi_ss_sel      = wb_cyc_i & wb_stb_i & (wb_adr_i[`SPI_OFS_BITS] == `SPI_SS);
+  
+  // Read from registers
+  always @(wb_adr_i or rx or ctrl or divider or ss)
+  begin
+    case (wb_adr_i[`SPI_OFS_BITS])
+`ifdef SPI_MAX_CHAR_128
+      `SPI_RX_0:    wb_dat = rx[31:0];
+      `SPI_RX_1:    wb_dat = rx[63:32];
+      `SPI_RX_2:    wb_dat = rx[95:64];
+      `SPI_RX_3:    wb_dat = {{128-`SPI_MAX_CHAR{1'b0}}, rx[`SPI_MAX_CHAR-1:96]};
+`else
+`ifdef SPI_MAX_CHAR_64
+      `SPI_RX_0:    wb_dat = rx[31:0];
+      `SPI_RX_1:    wb_dat = {{64-`SPI_MAX_CHAR{1'b0}}, rx[`SPI_MAX_CHAR-1:32]};
+      `SPI_RX_2:    wb_dat = 32'b0;
+      `SPI_RX_3:    wb_dat = 32'b0;
+`else
+      `SPI_RX_0:    wb_dat = {{32-`SPI_MAX_CHAR{1'b0}}, rx[`SPI_MAX_CHAR-1:0]};
+      `SPI_RX_1:    wb_dat = 32'b0;
+      `SPI_RX_2:    wb_dat = 32'b0;
+      `SPI_RX_3:    wb_dat = 32'b0;
+`endif
+`endif
+      `SPI_CTRL:    wb_dat = {{32-`SPI_CTRL_BIT_NB{1'b0}}, ctrl};
+      `SPI_DEVIDE:  wb_dat = {{32-`SPI_DIVIDER_LEN{1'b0}}, divider};
+      `SPI_SS:      wb_dat = {{32-`SPI_SS_NB{1'b0}}, ss};
+      default:      wb_dat = 32'bx;
+    endcase
+  end
+  
+  // Wb data out
+  always @(posedge wb_clk_i or posedge wb_rst_i)
+  begin
+    if (wb_rst_i)
+      wb_dat_o <= #Tp 32'b0;
+    else
+      wb_dat_o <= #Tp wb_dat;
+  end
+  
+  // Wb acknowledge
+  always @(posedge wb_clk_i or posedge wb_rst_i)
+  begin
+    if (wb_rst_i)
+      wb_ack_o <= #Tp 1'b0;
+    else
+      wb_ack_o <= #Tp wb_cyc_i & wb_stb_i & ~wb_ack_o;
+  end
+  
+  // Wb error
+  assign wb_err_o = 1'b0;
+  
+  // Interrupt
+  always @(posedge wb_clk_i or posedge wb_rst_i)
+  begin
+    if (wb_rst_i)
+      wb_int_o <= #Tp 1'b0;
+    else if (ie && tip && last_bit && pos_edge)
+      wb_int_o <= #Tp 1'b1;
+    else if (wb_ack_o)
+      wb_int_o <= #Tp 1'b0;
+  end
+  
+  // Divider register
+  always @(posedge wb_clk_i or posedge wb_rst_i)
+  begin
+    if (wb_rst_i)
+        divider <= #Tp {`SPI_DIVIDER_LEN{1'b0}};
+    else if (spi_divider_sel && wb_we_i && !tip)
+      begin
+      `ifdef SPI_DIVIDER_LEN_8
+        if (wb_sel_i[0])
+          divider <= #Tp wb_dat_i[`SPI_DIVIDER_LEN-1:0];
+      `endif
+      `ifdef SPI_DIVIDER_LEN_16
+        if (wb_sel_i[0])
+          divider[7:0] <= #Tp wb_dat_i[7:0];
+        if (wb_sel_i[1])
+          divider[`SPI_DIVIDER_LEN-1:8] <= #Tp wb_dat_i[`SPI_DIVIDER_LEN-1:8];
+      `endif
+      `ifdef SPI_DIVIDER_LEN_24
+        if (wb_sel_i[0])
+          divider[7:0] <= #Tp wb_dat_i[7:0];
+        if (wb_sel_i[1])
+          divider[15:8] <= #Tp wb_dat_i[15:8];
+        if (wb_sel_i[2])
+          divider[`SPI_DIVIDER_LEN-1:16] <= #Tp wb_dat_i[`SPI_DIVIDER_LEN-1:16];
+      `endif
+      `ifdef SPI_DIVIDER_LEN_32
+        if (wb_sel_i[0])
+          divider[7:0] <= #Tp wb_dat_i[7:0];
+        if (wb_sel_i[1])
+          divider[15:8] <= #Tp wb_dat_i[15:8];
+        if (wb_sel_i[2])
+          divider[23:16] <= #Tp wb_dat_i[23:16];
+        if (wb_sel_i[3])
+          divider[`SPI_DIVIDER_LEN-1:24] <= #Tp wb_dat_i[`SPI_DIVIDER_LEN-1:24];
+      `endif
+      end
+  end
+  
+  // Ctrl register
+  always @(posedge wb_clk_i or posedge wb_rst_i)
+  begin
+    if (wb_rst_i)
+      ctrl <= #Tp {`SPI_CTRL_BIT_NB{1'b0}};
+    else if(spi_ctrl_sel && wb_we_i && !tip)
+      begin
+        if (wb_sel_i[0])
+          ctrl[7:0] <= #Tp wb_dat_i[7:0] | {7'b0, ctrl[0]};
+        if (wb_sel_i[1])
+          ctrl[`SPI_CTRL_BIT_NB-1:8] <= #Tp wb_dat_i[`SPI_CTRL_BIT_NB-1:8];
+      end
+    else if(tip && last_bit && pos_edge)
+      ctrl[`SPI_CTRL_GO] <= #Tp 1'b0;
+  end
+  
+  assign rx_negedge = ctrl[`SPI_CTRL_RX_NEGEDGE];
+  assign tx_negedge = ctrl[`SPI_CTRL_TX_NEGEDGE];
+  assign go         = ctrl[`SPI_CTRL_GO];
+  assign char_len   = ctrl[`SPI_CTRL_CHAR_LEN];
+  assign lsb        = ctrl[`SPI_CTRL_LSB];
+  assign ie         = ctrl[`SPI_CTRL_IE];
+  assign ass        = ctrl[`SPI_CTRL_ASS];
+  
+  // Slave select register
+  always @(posedge wb_clk_i or posedge wb_rst_i)
+  begin
+    if (wb_rst_i)
+      ss <= #Tp {`SPI_SS_NB{1'b0}};
+    else if(spi_ss_sel && wb_we_i && !tip)
+      begin
+      `ifdef SPI_SS_NB_8
+        if (wb_sel_i[0])
+          ss <= #Tp wb_dat_i[`SPI_SS_NB-1:0];
+      `endif
+      `ifdef SPI_SS_NB_16
+        if (wb_sel_i[0])
+          ss[7:0] <= #Tp wb_dat_i[7:0];
+        if (wb_sel_i[1])
+          ss[`SPI_SS_NB-1:8] <= #Tp wb_dat_i[`SPI_SS_NB-1:8];
+      `endif
+      `ifdef SPI_SS_NB_24
+        if (wb_sel_i[0])
+          ss[7:0] <= #Tp wb_dat_i[7:0];
+        if (wb_sel_i[1])
+          ss[15:8] <= #Tp wb_dat_i[15:8];
+        if (wb_sel_i[2])
+          ss[`SPI_SS_NB-1:16] <= #Tp wb_dat_i[`SPI_SS_NB-1:16];
+      `endif
+      `ifdef SPI_SS_NB_32
+        if (wb_sel_i[0])
+          ss[7:0] <= #Tp wb_dat_i[7:0];
+        if (wb_sel_i[1])
+          ss[15:8] <= #Tp wb_dat_i[15:8];
+        if (wb_sel_i[2])
+          ss[23:16] <= #Tp wb_dat_i[23:16];
+        if (wb_sel_i[3])
+          ss[`SPI_SS_NB-1:24] <= #Tp wb_dat_i[`SPI_SS_NB-1:24];
+      `endif
+      end
+  end
+  
+  assign ss_pad_o = ~((ss & {`SPI_SS_NB{tip & ass}}) | (ss & {`SPI_SS_NB{!ass}}));
+  
+  spi_clgen clgen (.clk_in(wb_clk_i), .rst(wb_rst_i), .go(go), .enable(tip), .last_clk(last_bit),
+                   .divider(divider), .clk_out(sclk_pad_o), .pos_edge(pos_edge), 
+                   .neg_edge(neg_edge));
+  
+  spi_shift shift (.clk(wb_clk_i), .rst(wb_rst_i), .len(char_len[`SPI_CHAR_LEN_BITS-1:0]),
+                   .latch(spi_tx_sel[3:0] & {4{wb_we_i}}), .byte_sel(wb_sel_i), .lsb(lsb), 
+                   .go(go), .pos_edge(pos_edge), .neg_edge(neg_edge), 
+                   .rx_negedge(rx_negedge), .tx_negedge(tx_negedge),
+                   .tip(tip), .last(last_bit), 
+                   .p_in(wb_dat_i), .p_out(rx), 
+                   .s_clk(sclk_pad_o), .s_in(miso_pad_i), .s_out(mosi_pad_o));
+endmodule
+  
diff --git a/opencores/spi/rtl/verilog/timescale.v b/opencores/spi/rtl/verilog/timescale.v
new file mode 100644
index 000000000..60d4ecbd1
--- /dev/null
+++ b/opencores/spi/rtl/verilog/timescale.v
@@ -0,0 +1,2 @@
+`timescale 1ns / 10ps
+
diff --git a/opencores/spi/sim/CVS/Entries b/opencores/spi/sim/CVS/Entries
new file mode 100644
index 000000000..545533337
--- /dev/null
+++ b/opencores/spi/sim/CVS/Entries
@@ -0,0 +1,2 @@
+D/rtl_sim////
+D/run////
diff --git a/opencores/spi/sim/CVS/Repository b/opencores/spi/sim/CVS/Repository
new file mode 100644
index 000000000..9ec769309
--- /dev/null
+++ b/opencores/spi/sim/CVS/Repository
@@ -0,0 +1 @@
+spi/sim
diff --git a/opencores/spi/sim/CVS/Root b/opencores/spi/sim/CVS/Root
new file mode 100644
index 000000000..44b2aa23b
--- /dev/null
+++ b/opencores/spi/sim/CVS/Root
@@ -0,0 +1 @@
+:pserver:anonymous@cvs.opencores.org:/cvsroot/anonymous
diff --git a/opencores/spi/sim/CVS/Template b/opencores/spi/sim/CVS/Template
new file mode 100644
index 000000000..e69de29bb
--- /dev/null
+++ b/opencores/spi/sim/CVS/Template
diff --git a/opencores/spi/sim/rtl_sim/CVS/Entries b/opencores/spi/sim/rtl_sim/CVS/Entries
new file mode 100644
index 000000000..8ab9f73a7
--- /dev/null
+++ b/opencores/spi/sim/rtl_sim/CVS/Entries
@@ -0,0 +1 @@
+D/run////
diff --git a/opencores/spi/sim/rtl_sim/CVS/Repository b/opencores/spi/sim/rtl_sim/CVS/Repository
new file mode 100644
index 000000000..c8c6a94c6
--- /dev/null
+++ b/opencores/spi/sim/rtl_sim/CVS/Repository
@@ -0,0 +1 @@
+spi/sim/rtl_sim
diff --git a/opencores/spi/sim/rtl_sim/CVS/Root b/opencores/spi/sim/rtl_sim/CVS/Root
new file mode 100644
index 000000000..44b2aa23b
--- /dev/null
+++ b/opencores/spi/sim/rtl_sim/CVS/Root
@@ -0,0 +1 @@
+:pserver:anonymous@cvs.opencores.org:/cvsroot/anonymous
diff --git a/opencores/spi/sim/rtl_sim/CVS/Template b/opencores/spi/sim/rtl_sim/CVS/Template
new file mode 100644
index 000000000..e69de29bb
--- /dev/null
+++ b/opencores/spi/sim/rtl_sim/CVS/Template
diff --git a/opencores/spi/sim/rtl_sim/run/CVS/Entries b/opencores/spi/sim/rtl_sim/run/CVS/Entries
new file mode 100644
index 000000000..8947f64a0
--- /dev/null
+++ b/opencores/spi/sim/rtl_sim/run/CVS/Entries
@@ -0,0 +1,4 @@
+/rtl.fl/1.1/Mon Mar 15 17:46:08 2004//
+/run_sim/1.1/Mon Mar 15 17:46:08 2004//
+/sim.fl/1.1/Mon Mar 15 17:46:08 2004//
+D
diff --git a/opencores/spi/sim/rtl_sim/run/CVS/Repository b/opencores/spi/sim/rtl_sim/run/CVS/Repository
new file mode 100644
index 000000000..5200bb196
--- /dev/null
+++ b/opencores/spi/sim/rtl_sim/run/CVS/Repository
@@ -0,0 +1 @@
+spi/sim/rtl_sim/run
diff --git a/opencores/spi/sim/rtl_sim/run/CVS/Root b/opencores/spi/sim/rtl_sim/run/CVS/Root
new file mode 100644
index 000000000..44b2aa23b
--- /dev/null
+++ b/opencores/spi/sim/rtl_sim/run/CVS/Root
@@ -0,0 +1 @@
+:pserver:anonymous@cvs.opencores.org:/cvsroot/anonymous
diff --git a/opencores/spi/sim/rtl_sim/run/CVS/Template b/opencores/spi/sim/rtl_sim/run/CVS/Template
new file mode 100644
index 000000000..e69de29bb
--- /dev/null
+++ b/opencores/spi/sim/rtl_sim/run/CVS/Template
diff --git a/opencores/spi/sim/rtl_sim/run/rtl.fl b/opencores/spi/sim/rtl_sim/run/rtl.fl
new file mode 100644
index 000000000..d84a0840d
--- /dev/null
+++ b/opencores/spi/sim/rtl_sim/run/rtl.fl
@@ -0,0 +1,3 @@
+spi_top.v
+spi_clgen.v
+spi_shift.v
diff --git a/opencores/spi/sim/rtl_sim/run/run_sim b/opencores/spi/sim/rtl_sim/run/run_sim
new file mode 100755
index 000000000..1b13a35b9
--- /dev/null
+++ b/opencores/spi/sim/rtl_sim/run/run_sim
@@ -0,0 +1,108 @@
+#!/bin/csh -f
+
+set current_par = 0
+set output_waveform = 0
+while ( $current_par < $# )
+    @ current_par = $current_par + 1
+    case wave:
+        @ output_waveform = 1
+        breaksw
+    default:
+        echo 'Unknown option "'$argv[$current_par]'"!'
+        exit
+        breaksw
+    endsw
+end
+
+echo "TEST: spi"
+
+#echo "-CDSLIB ./cds.lib"               > ncvlog.args
+#echo "-HDLVAR ./hdl.var"              >> ncvlog.args
+echo "-MESSAGES"                       > ncvlog.args
+echo "-INCDIR ../../../bench/verilog" >> ncvlog.args
+echo "-INCDIR ../../../rtl/verilog"   >> ncvlog.args
+echo "-NOCOPYRIGHT"                   >> ncvlog.args
+echo "-UPDATE"                        >> ncvlog.args
+echo "-LOGFILE ncvlog.log"            >> ncvlog.args
+
+foreach filename ( `cat ./rtl.fl` )
+    echo "../../../rtl/verilog/"$filename >> ncvlog.args
+end
+
+foreach filename ( `cat ./sim.fl` )
+    echo "../../../bench/verilog/"$filename >> ncvlog.args
+end
+
+ncvlog -f ncvlog.args
+if ($status != 0) then
+  echo "STATUS: failed"
+  exit
+endif
+
+
+echo "-MESSAGES"                             > ncelab.args
+echo "-NOCOPYRIGHT"                         >> ncelab.args
+#echo "-CDSLIB ./cds.lib"                    >> ncelab.args
+#echo "-HDLVAR ./hdl.var"                    >> ncelab.args
+echo "-LOGFILE ncelab.log"                  >> ncelab.args
+echo "-SNAPSHOT worklib.tb_spi_top:v"       >> ncelab.args
+echo "-NOTIMINGCHECKS"                      >> ncelab.args
+echo "-ACCESS +RWC"                         >> ncelab.args
+echo "tb_spi_top"                           >> ncelab.args
+
+ncelab -f ncelab.args
+if ($status != 0) then
+  echo "STATUS: failed"
+  exit
+endif
+
+
+echo "-MESSAGES"                   > ncsim.args
+echo "-NOCOPYRIGHT"               >> ncsim.args
+#echo "-CDSLIB ./cds.lib"          >> ncsim.args
+#echo "-HDLVAR ./hdl.var"          >> ncsim.args
+echo "-INPUT ncsim.tcl"           >> ncsim.args
+echo "-LOGFILE ncsim.log"         >> ncsim.args
+echo "worklib.tb_spi_top:v"       >> ncsim.args
+
+if ( $output_waveform ) then
+    echo "database -open waves -shm -into ../out/wav"                         > ./ncsim.tcl
+    echo "probe -create -database waves -shm tb_spi_top -all -depth all"      >> ./ncsim.tcl
+    echo "stop -create -time 25000000 -relative"                              >> ./ncsim.tcl
+    echo "run"                                                                >> ./ncsim.tcl
+else
+    echo "stop -create -time 25000000 -relative"                              >> ./ncsim.tcl
+    echo "run"  > ./ncsim.tcl
+endif
+
+echo "exit" >> ncsim.tcl
+
+ncsim -LICQUEUE -f ./ncsim.args
+
+set exit_line_nb = `sed -n '/exit/=' < ./ncsim.log`
+
+set dead_line_nb = 0
+
+if ( $exit_line_nb ) then
+
+  @ dead_line_nb = $exit_line_nb - 1
+  set exit_line=`sed -n $exit_line_nb's/exit/&/gp' < ./ncsim.log`
+  set dead_line=`sed -n $dead_line_nb's/report/&/gp' < ./ncsim.log`
+
+  if ( "$dead_line" == "report (deaddead)" ) then
+    if ( "$exit_line" == "exit (00000000)"   ) then
+      echo "STATUS: passed"  #|tee -a ./run_sim.log 2>&1
+    else
+      echo "STATUS: failed"  #|tee -a ./run_sim.log 2>&1
+    endif
+  else
+    echo "STATUS: failed"
+  endif
+
+endif
+
+exit
+
+
+
+
diff --git a/opencores/spi/sim/rtl_sim/run/sim.fl b/opencores/spi/sim/rtl_sim/run/sim.fl
new file mode 100644
index 000000000..283aad1f8
--- /dev/null
+++ b/opencores/spi/sim/rtl_sim/run/sim.fl
@@ -0,0 +1,3 @@
+tb_spi_top.v
+wb_master_model.v
+spi_slave_model.v
diff --git a/opencores/spi/sim/run/CVS/Entries b/opencores/spi/sim/run/CVS/Entries
new file mode 100644
index 000000000..178481050
--- /dev/null
+++ b/opencores/spi/sim/run/CVS/Entries
@@ -0,0 +1 @@
+D
diff --git a/opencores/spi/sim/run/CVS/Repository b/opencores/spi/sim/run/CVS/Repository
new file mode 100644
index 000000000..e8646e70d
--- /dev/null
+++ b/opencores/spi/sim/run/CVS/Repository
@@ -0,0 +1 @@
+spi/sim/run
diff --git a/opencores/spi/sim/run/CVS/Root b/opencores/spi/sim/run/CVS/Root
new file mode 100644
index 000000000..44b2aa23b
--- /dev/null
+++ b/opencores/spi/sim/run/CVS/Root
@@ -0,0 +1 @@
+:pserver:anonymous@cvs.opencores.org:/cvsroot/anonymous
diff --git a/opencores/spi/sim/run/CVS/Template b/opencores/spi/sim/run/CVS/Template
new file mode 100644
index 000000000..e69de29bb
--- /dev/null
+++ b/opencores/spi/sim/run/CVS/Template